Question

A capacitor is formed from two concentric spherical
conductingshells separated by vacuum. The inner sphere has
radius11.0, and the outer sphere has radius 16.0. A potential difference of 100 is applied to the capacitor.

What is the energy density at = 11.1, just outside the inner sphere?

What is the energy density at = 15.9, just inside the outer sphere?

For a parallel-plate capacitor the energy density is uniformin
the region between the plates, except near the edges of theplates.
Is this also true for a spherical capacitor?